From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8AE9C433EF for ; Fri, 26 Nov 2021 02:41:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357607AbhKZCoh (ORCPT ); Thu, 25 Nov 2021 21:44:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:49264 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345381AbhKZCmL (ORCPT ); Thu, 25 Nov 2021 21:42:11 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3C5F861153; Fri, 26 Nov 2021 02:35:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637894109; bh=tB//n0tYS1KCTrFcXku2NlsdtCOW+4IRGkpsk+eUch8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KTCbW05ZDc7hw3lDKLO9ypjpJi2FMYdKl7IfoxZEHmou8ulnRWOv7DXi2JI3XZfvj mC3tLNdP0moGvS3z5629v+MXlIMbumqYCLXxrPLCO0zOmcU2oe9okn//Yiwiqdp9ax OmtpTtrc1qGUCRIPfkNvHJuNYwh+zH9l9TyQ8GhOHKHwAEvHbQAjZ4OCb9rOMzAkWn PNout+xtYCFbAdxH2XtnKqeCWdltA0SnwxBDx9WQrgFD6zxB4vgKSoUI70tIEYAb3R IfWjQqSHqKDsNEgV4P8fK87rwdcP8xCPJePK9mdMlACxntwia1fzzsrEKZjJelQqg+ MAIN+R6i6YHRA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Manaf Meethalavalappu Pallikunhi , Thara Gopinath , "Rafael J . Wysocki" , Sasha Levin , rafael@kernel.org, daniel.lezcano@linaro.org, linux-pm@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 12/19] thermal: core: Reset previous low and high trip during thermal zone init Date: Thu, 25 Nov 2021 21:34:41 -0500 Message-Id: <20211126023448.442529-12-sashal@kernel.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211126023448.442529-1-sashal@kernel.org> References: <20211126023448.442529-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Manaf Meethalavalappu Pallikunhi [ Upstream commit 99b63316c39988039965693f5f43d8b4ccb1c86c ] During the suspend is in process, thermal_zone_device_update bails out thermal zone re-evaluation for any sensor trip violation without setting next valid trip to that sensor. It assumes during resume it will re-evaluate same thermal zone and update trip. But when it is in suspend temperature goes down and on resume path while updating thermal zone if temperature is less than previously violated trip, thermal zone set trip function evaluates the same previous high and previous low trip as new high and low trip. Since there is no change in high/low trip, it bails out from thermal zone set trip API without setting any trip. It leads to a case where sensor high trip or low trip is disabled forever even though thermal zone has a valid high or low trip. During thermal zone device init, reset thermal zone previous high and low trip. It resolves above mentioned scenario. Signed-off-by: Manaf Meethalavalappu Pallikunhi Reviewed-by: Thara Gopinath Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/thermal/thermal_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 20eab56b02cb9..f4490b8120176 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -460,6 +460,8 @@ static void thermal_zone_device_init(struct thermal_zone_device *tz) { struct thermal_instance *pos; tz->temperature = THERMAL_TEMP_INVALID; + tz->prev_low_trip = -INT_MAX; + tz->prev_high_trip = INT_MAX; list_for_each_entry(pos, &tz->thermal_instances, tz_node) pos->initialized = false; } -- 2.33.0